Dreams.

Blue and red. I think I was on the blue team, although that's not certain. We kill and respawn. It's like a team deathmatch. He didn't tell me much about the weapons, except that there's a lot of weaponry at the base, dating back to World War I (some kind of cannons, etc.). Each team's base is divided into two parts: one part is off-limits to the other team, and all that weaponry is located there. There are also tents with warriors/soldiers. The other part can be attacked, as can all the space outside the bases.
And there was also a swimming pool. No one is supposed to kill anyone there, just swim ^^ And a very, very high tower from which you can jump.
I fought for a bit and then went back to my base. There, I met my friend in a tent and we chatted about something. Nearby, some huge, broad warrior was sleeping with a folding two-handed sword (it folded in the middle for compactness). Anyway, we woke him up with our talking, he got up, unfolded his sword, but couldn't handle it and fell back asleep.
Then I decided to jump off the tower. When I climbed up there, I realized that it was all a dream, I was slowly starting to wake up, but I didn't want to leave the dream. And I could have easily done so: the pool was small, plus there was some kind of round stone thing in the middle. It would have been easy to hit it or the bottom when jumping from the tower. I did jump, but I didn't make it, because I remembered too late that the feeling of falling throws you out of the dream. I remembered this in the dream, because it's a lie. The truth is that you are thrown out of the dream when you fall in real life, not in the dream itself. Anyway, I didn't reach the bottom, but if I had, I would have almost hit that stone thing. I jumped like a soldier, decided to do it that way for the first time, instead of diving headfirst.